Surface Tension


The ratio of the work needed to increase the surface area of a liquid and the surface area itself. The molecules in the surface layer attract each other resulting in the phenomenon of surface tension. Work has to be done against this attractive forces to increase the surface area. On the other hand energy or work is released when the surface area is decreased. Since a sphere has the smallest area for a fixed volume all droplets tend to be round.


The force acting on a liquid-gas interface resulting in thin film on the surface.



Refer to this page:


Electrohydrodynamic atomization


Critical micelle concentration




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